CN105148833B - A kind of compound diatomite adsorbant of modification and preparation method for handling industrial wastewater - Google Patents
A kind of compound diatomite adsorbant of modification and preparation method for handling industrial wastewater Download PDFInfo
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- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 title claims abstract description 61
- 150000001875 compounds Chemical class 0.000 title claims abstract description 26
- 230000004048 modification Effects 0.000 title claims abstract description 21
- 239000010842 industrial wastewater Substances 0.000 title claims abstract description 15
- 238000002360 preparation method Methods 0.000 title claims abstract description 7
- 238000002715 modification method Methods 0.000 title abstract description 4
- 229960000892 attapulgite Drugs 0.000 claims abstract description 18
- 229910052625 palygorskite Inorganic materials 0.000 claims abstract description 18
- WYTGDNHDOZPMIW-RCBQFDQVSA-N alstonine Natural products C1=CC2=C3C=CC=CC3=NC2=C2N1C[C@H]1[C@H](C)OC=C(C(=O)OC)[C@H]1C2 WYTGDNHDOZPMIW-RCBQFDQVSA-N 0.000 claims abstract description 17
- 238000012986 modification Methods 0.000 claims abstract description 17
- 150000003242 quaternary ammonium salts Chemical class 0.000 claims abstract description 11
- 238000001354 calcination Methods 0.000 claims abstract description 8
- -1 quaternary ammonium salt-modified diatomite Chemical class 0.000 claims abstract description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 20
- 238000003756 stirring Methods 0.000 claims description 7
- 238000001914 filtration Methods 0.000 claims description 6
- 239000002002 slurry Substances 0.000 claims description 6
- 239000002689 soil Substances 0.000 claims description 6
- 238000005516 engineering process Methods 0.000 claims description 3
- 238000012545 processing Methods 0.000 abstract description 12
- 239000003344 environmental pollutant Substances 0.000 abstract description 9
- 231100000719 pollutant Toxicity 0.000 abstract description 9
- 238000010521 absorption reaction Methods 0.000 abstract description 6
- 239000000463 material Substances 0.000 abstract description 6
- 229910052500 inorganic mineral Inorganic materials 0.000 abstract description 5
- 239000011707 mineral Substances 0.000 abstract description 5
- 238000000746 purification Methods 0.000 abstract description 2
- 239000002351 wastewater Substances 0.000 description 34
- 239000003921 oil Substances 0.000 description 20
- 238000000034 method Methods 0.000 description 17
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 12
- 238000004519 manufacturing process Methods 0.000 description 9
- 238000001179 sorption measurement Methods 0.000 description 9
- 239000000126 substance Substances 0.000 description 9
- 239000003814 drug Substances 0.000 description 7
- 239000011148 porous material Substances 0.000 description 7
- 238000005406 washing Methods 0.000 description 7
- 239000002699 waste material Substances 0.000 description 7
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 6
- ZMANZCXQSJIPKH-UHFFFAOYSA-N Triethylamine Chemical compound CCN(CC)CC ZMANZCXQSJIPKH-UHFFFAOYSA-N 0.000 description 6
- 239000011777 magnesium Substances 0.000 description 6
- 229910052749 magnesium Inorganic materials 0.000 description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 4
- 239000003463 adsorbent Substances 0.000 description 4
- 239000000460 chlorine Substances 0.000 description 4
- 229910052801 chlorine Inorganic materials 0.000 description 4
- LXCYSACZTOKNNS-UHFFFAOYSA-N diethoxy(oxo)phosphanium Chemical compound CCO[P+](=O)OCC LXCYSACZTOKNNS-UHFFFAOYSA-N 0.000 description 4
- 238000000605 extraction Methods 0.000 description 4
- 238000005342 ion exchange Methods 0.000 description 4
- 150000003839 salts Chemical class 0.000 description 4
- DNNIMMTYNOWWHP-UHFFFAOYSA-N C1=CC=C(C=C1)S(=O)(=O)OCOP(O)(O)=O Chemical compound C1=CC=C(C=C1)S(=O)(=O)OCOP(O)(O)=O DNNIMMTYNOWWHP-UHFFFAOYSA-N 0.000 description 3
- 238000001035 drying Methods 0.000 description 3
- 239000012065 filter cake Substances 0.000 description 3
- 229910001385 heavy metal Inorganic materials 0.000 description 3
- 238000009413 insulation Methods 0.000 description 3
- 150000002500 ions Chemical class 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- LZZYPRNAOMGNLH-UHFFFAOYSA-M Cetrimonium bromide Chemical compound [Br-].CCCCCCCCCCCCCCCC[N+](C)(C)C LZZYPRNAOMGNLH-UHFFFAOYSA-M 0.000 description 2
- QUSNBJAOOMFDIB-UHFFFAOYSA-N Ethylamine Chemical compound CCN QUSNBJAOOMFDIB-UHFFFAOYSA-N 0.000 description 2
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 2
- 230000003115 biocidal effect Effects 0.000 description 2
- WOWHHFRSBJGXCM-UHFFFAOYSA-M cetyltrimethylammonium chloride Chemical compound [Cl-].CCCCCCCCCCCCCCCC[N+](C)(C)C WOWHHFRSBJGXCM-UHFFFAOYSA-M 0.000 description 2
- 238000001311 chemical methods and process Methods 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 229910052681 coesite Inorganic materials 0.000 description 2
- 229910052906 cristobalite Inorganic materials 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- JMANVNJQNLATNU-UHFFFAOYSA-N oxalonitrile Chemical compound N#CC#N JMANVNJQNLATNU-UHFFFAOYSA-N 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 125000001453 quaternary ammonium group Chemical class 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- 241000894007 species Species 0.000 description 2
- 229910052682 stishovite Inorganic materials 0.000 description 2
- 229910052905 tridymite Inorganic materials 0.000 description 2
- 238000004065 wastewater treatment Methods 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- 241000195493 Cryptophyta Species 0.000 description 1
- PXGOKWXKJXAPGV-UHFFFAOYSA-N Fluorine Chemical compound FF PXGOKWXKJXAPGV-UHFFFAOYSA-N 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000001154 acute effect Effects 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 125000005211 alkyl trimethyl ammonium group Chemical group 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 238000011953 bioanalysis Methods 0.000 description 1
- 239000002734 clay mineral Substances 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
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- 238000004043 dyeing Methods 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 238000004817 gas chromatography Methods 0.000 description 1
- 231100001261 hazardous Toxicity 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- HCWCAKKEBCNQJP-UHFFFAOYSA-N magnesium orthosilicate Chemical compound [Mg+2].[Mg+2].[O-][Si]([O-])([O-])[O-] HCWCAKKEBCNQJP-UHFFFAOYSA-N 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- 239000000391 magnesium silicate Substances 0.000 description 1
- 229910052919 magnesium silicate Inorganic materials 0.000 description 1
- 235000019792 magnesium silicate Nutrition 0.000 description 1
- 229940100892 mercury compound Drugs 0.000 description 1
- 150000002731 mercury compounds Chemical class 0.000 description 1
- 230000001473 noxious effect Effects 0.000 description 1
- 239000002332 oil field water Substances 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 230000007096 poisonous effect Effects 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 150000003384 small molecules Chemical class 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 239000011206 ternary composite Substances 0.000 description 1
- 230000010148 water-pollination Effects 0.000 description 1
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- Water Treatment By Sorption (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
Abstract
The present invention relates to a kind of compound diatomite adsorbant of modification and preparation method for handling industrial wastewater.The technical scheme is that be modified first to the diatomite after purification by mineral and calcining with organic quaternary ammonium salt, then by modified diatomite and attapulgite and serpentine de-magging white residue by mass percentage 60%~75%：5%~35%：5%~35% is uniformly mixed, and produces modified compound diatomite adsorbant.Three kinds of quaternary ammonium salt-modified diatomite, attapulgite, serpentine de-magging white residue porous mineral materials in the compound diatomite adsorbant of the modification can play respective strong point, coordinated, the selective absorption variety classes organic and inorganic pollution different with molecular size, suitable for processing pollutant component complexity and the higher industrial wastewater of concentration.
Description
Technical field
The present invention relates to a kind of compound diatomite adsorbant of modification and preparation method for handling industrial wastewater, belong to nonmetallic
Mineral material and application and industrial waste water treatment.
Background technology
The industrial wastewaters such as pharmacy, chemical industry, oil recovery contain substantial amounts of organic and inorganic composition, without these Industry Wastes of processing
Water is directly discharged to rivers and lakes, not only water environment and soil is caused seriously to pollute, and endanger human health and economic society
The sustainable development of meeting.Poisonous and hazardous organic and level of inorganic contaminants is high in pharmaceuticals industry waste water therein, to the mankind
The harm of living environment and health is particularly acute.
Pharmaceuticals industry waste water is primarily referred to as manufacturing the waste water of the pharmaceutical factories such as antibiotic, antibiotic, antiserum discharge.This is a kind of
The pollutant component of waste water is complicated, containing a large amount of acid, alkali, salt and gas chromatographies in waste water, often carries color and peculiar smell；Waste water
Pollutant component and content it is different with the species of produced medicine, generally have containing phenol, fluorine, cyanogen, mercury compound etc.
BOD, COD, SS and colloidal substance of noxious material and high concentration.
Oil production waste water in oil field is caused organic wastewater during oil recovery, this kind of waste water contain substantial amounts of small molecule and
Larger molecular organicses, COD are higher.With petroleum industry develop rapidly with polymer displacement of reservoir oil and ternary composite oil-displacing technique should
With the discharge capacity of this kind of waste water is increasing, and without processing, directly outer row not only brings serious environmental pressure, and causes oil
It is becoming tight with water day in field.
Handling the method for above-mentioned industrial wastewater at present has chemical method, Physical, bioanalysis and physical-chemical process etc..Chemical method
Mainly there are chemical oxidization method, ion exchange and electrolysis；Physical primary attachment method and coagulation, filtration method；Physical-chemical process master
There is flocculent precipitation.
Absorption method is one of main method for handling industrial wastewater, and adsorbent is the core of absorption method.Treatment of pharmacy at present
The adsorbent of industrial wastewater and oil production waste water in oil field is mainly activated carbon.Activated carbon is a kind of excellent adsorbent, but due to
The limitation of raw materials for production and expensive and production process carrying capacity of environment weight, production cost is high, and popularization and application are restricted.
Diatomite is the siliceous sedimentary rock that a kind of ancient times diatom organic remains is formed through long-term geologic process, its design feature
It is nanoaperture in the diatom structures such as the disk of regular distribution, rotary strainer, annulus, cylinder, 10~30nm of average pore size, pore volume
0.1ml/g or so, porosity are more than 80%.Its main chemical compositions is noncrystalline SiO2, chemical stability is good；Specific surface area compared with
Greatly, there is good adsorptivity；Itself is environmentally friendly.And diatomite resource is relatively abundant, exploitation and processing cost are relatively low.Through
The diatomite after working process is crossed to be applied in the processing of municipal sewage, effluent containing heavy metal ions, dyeing waste water etc..
But the industrial wastewaters such as pharmacy and oil extraction in oil field for high concentration and complicated component, at non-modified single diatomite adsorbant
It is limited or not good enough to manage effect.
The present invention gives up for complicated component and the higher industrial wastewater of concentration, particularly pharmaceuticals industry waste water and oil extraction in oil field
Water technology present situation and diatomite water treatment agent application present situation, propose a kind of be used at pharmaceuticals industry and oil production waste water in oil field
Compound diatomite adsorbant of modification of reason and preparation method thereof.
The content of the invention
In view of pollutant component is complicated in pharmaceuticals industry waste water and oil production waste water in oil field, both containing macromolecular not soluble in water
And Hydrocarbon Organic, contain the small organic molecule and organic surface active agent for being dissolved in water again, also have inorganic salts in pharmacy waste water
And heavy metal ion, the present invention propose a kind of modification infusorial earth adsorbent skill compound with attapulgite, serpentine de-magging white residue
Art scheme, effectively to handle such waste water.
The technical scheme of modification compound diatomite adsorbant proposed by the present invention for complicated component wastewater treatment is, first
First to purification by mineral and calcining after diatomite be modified with organic quaternary ammonium salt, then by quaternary ammonium salt-modified diatomite with
Attapulgite and serpentine de-magging white residue by mass percentage 60%~75%：5%~35%：5%~35% is uniformly mixed
Close.
Described diatomite is modified with quaternary ammonium salt, it is characterized in that its processing step is：
(1) diatomite is calcined into 1.5h at 450 DEG C, it is therefore an objective to remove capillary water in diatom particle duct and organic
Matter, duct is dredged, increase pore volume and specific surface area；
(2) add water stirring that the silicon that calcining diatomite mass concentration is 20%~30% is made step (1) calcined product
Algae essence soil paste material；
(3) add organic quaternary ammonium salt in step (2) the diatomite slurry to be modified, organic quaternary ammonium salt dosage is
The 0.5%~3.0% of diatomite quality is calcined, modification temperature is 50~90 DEG C, 1~3h of modification time；
(4) dry, be made quaternary ammonium salt-modified by the filtering of step (3) modified product, washing and at a temperature of 100~200 DEG C
Diatomite.
Diatomite described in above-mentioned steps (3) is modified with quaternary ammonium salt, it is characterized in that organic quaternary ammonium salt is 16
Alkyl trimethyl ammonium bromide or hexadecyltrimethylammonium chloride.
With the diatomite after quaternary ammonium salt-modified, one side particle surface and duct become a certain degree of by hydrophily
Hydrophobicity, the compatibility with useless Organic substance in water is improved, another aspect table/interface is electrically adjusted and optimized,
Enhance the ability of absorption organic pollution.
Attapulgite is a kind of rich magnesium silicate clay mineral of chain layer structure, and crystal structure is two layers of silicon-oxy tetrahedron
Layer one layer of magnesium (aluminium) oxygen octahedra of folder.It, which is structurally characterized in that, forms the hole parallel with chain in tetrahedron bar interband, and hole is put down
Equal aperture is 0.5~0.7nm.The specific surface area of attapulgite is about 50~400m2/ g, pore volume 0.07ml/g or so, for
Organic molecule has stronger absorption property.Because the specific surface area of attapulgite is larger, and there is certain ion exchange
Function is stronger to organic molecule pollutant adsorption capacity, moreover it is possible to the inorganic salts and water soluble organic substance in waste water to be removed, with changing
When property tripolite compound matches somebody with somebody processes composition complex industrial waste water, larger and without ion-exchange capacity the kieselguhr adsorption in aperture is made up
The deficiency of agent.
Serpentine de-magging white residue is the porous siliceous material after serpentine separation and Extraction magnesia components, and its main component is
Noncrystalline SiO2, average pore size about 1~5nm, pore volume 0.25ml/g or so, 100~200m of specific surface area2/ g, its specific surface area
It is big compared with diatomite, but aperture is small compared with diatomite, has stronger suction to part heavy metal ion and soluble and small organic molecule
Attached ability, when handling the industrial wastewater of pollutant component complexity, single diatomaceous deficiency can be made up.
Three kinds of above-mentioned quaternary ammonium salt-modified diatomite, attapulgite, serpentine de-magging white residue porous mineral materials pore-size distributions
From several angstroms to few tens of nanometers, average pore size scope from 0.5nm to 20nm, and surface electrical behavior and ion-exchange performance also it is each not
It is identical, respective strong point, coordinated, selective absorption difference can be played after being compounded according to the pollutant component of waste water
The species organic and inorganic pollution different with molecular size, the pharmaceuticals industry waste water higher to complicated component and concentration and oil field
The adsorption capacity of overall pollutant is strong in oil extraction waste water, high treating effect.
Brief description of the drawings
Fig. 1 is the shape appearance figure of modification infusorial earth.
Fig. 2 is the shape appearance figure of attapulgite.
Fig. 3 is the shape appearance figure of serpentine de-magging white residue.
Embodiment
Embodiment 1
The diatomite 500g being derived from after the ore dressing of Linjiang City of Jilin Province Bei Feng diatomite Co., Ltd, rotate and manage in laboratory
In formula stove 1.5h is calcined at 450 DEG C；The diatomite 200g after calcining is taken to add clear water 600ml to be stirred in the three-necked flask of laboratory
It is placed in water-bath and heats after uniformly, cetyl trimethylammonium bromide 2.0g is added after slurry temperature rises to 75 DEG C, 70
Filtering, washing after the modified 1.5h of~80 DEG C of insulations, the filter cake after washing are dried at 105 DEG C in drying box, obtain being modified diatom
Soil.
Above-mentioned modification infusorial earth 65g, attapulgite 30g are taken, serpentine carries magnesium white residue 5g and mixed in laboratory stirrer
Uniformly, obtain being modified compound diatomite adsorbant.
Take DESMP (p-benzenesulfonyloxymethyl phosphoric acid diethylester) production waste water 1000mL.The waste component is complicated, organic
Thing content is high and contains a certain amount of inorganic salts, and COD (COD) is very high, and specific pollutant load is formaldehyde
13.20g/L, triethylamine 5.31g/L, diethyl phosphite 2.58g/L, salinity 9.52%, chlorine root 5.15%, COD126.14g/
L, pH=5~6.
200g is added in above-mentioned 1000mL waste water and is modified compound diatom essence earth adsorbing, the stir process at a temperature of 70 DEG C
60min.The COD (COD) of water sample is 33.71g/L after processing, and COD adsorption rates are 73.28%；Formaldehyde 1.47g/L, three
Ethamine 0.35g/L, diethyl phosphite 0.24g/L, salinity 1.02%, chlorine root 0.35%, adsorption rate is respectively 88.86%,
93.41%th, 90.70%, 89.03%, 93.20%.
Embodiment 2
Modification infusorial earth 70g, attapulgite 5g prepared by Example 1, serpentine carry magnesium white residue 25g in laboratory blender
It is well mixed in device, obtains being modified compound diatomite adsorbant.
Take the north certain oil field waste discharge 1000mL, waste water COD 241.92mg/L, pH value 6~7.
7g is added in above-mentioned 1000mL waste water and is modified compound diatom essence earth adsorbing, the stir process at 30 DEG C of temperature
1.5h, the COD of water sample is 36.85mg/L after processing, COD clearance 84.77%.
Embodiment 3
The diatomite 500g being derived from after the ore dressing of Linjiang City of Jilin Province Bei Feng diatomite Co., Ltd, rotate and manage in laboratory
In formula stove 1.5h is calcined at 450 DEG C；The diatomite 200g after calcining is taken to add clear water 600ml to be stirred in the three-necked flask of laboratory
It is placed in water-bath and heats after uniformly, cetyl trimethylammonium bromide 4.0g is added after slurry temperature rises to 75 DEG C, 70
Filtering, washing after the modified 1.5h of~80 DEG C of insulations, the filter cake after washing are dried at 105 DEG C in drying box, obtain being modified diatom
Soil.
Above-mentioned modification infusorial earth 60g, attapulgite 33g are taken, serpentine carries magnesium white residue 7g and mixed in laboratory stirrer
Uniformly, obtain being modified compound diatomite adsorbant.
Take waste component, COD and pH value DESMP (p-benzenesulfonyloxymethyl phosphoric acid diethylester) same as Example 1
Produce waste water 1000mL.
200g is added in above-mentioned 1000mL waste water and is modified compound diatom essence earth adsorbing, the stir process at a temperature of 70 DEG C
60min.The COD (COD) of water sample is 31.96g/L after processing, and COD adsorption rates are 74.66%；Formaldehyde 1.42g/L, three
Ethamine 0.33g/L, diethyl phosphite 0.21g/L, salinity 1.05%, chlorine root 0.37%, adsorption rate is respectively 89.96%,
93.78%th, 91.86%, 88.97%, 92.82%.
Embodiment 4
Modification infusorial earth 65g, attapulgite 5g prepared by Example 3, serpentine carry magnesium white residue 30g in laboratory blender
It is well mixed in device, obtains being modified compound diatomite adsorbant.
Take the north certain oil field waste discharge 1000mL, waste water COD 241.92mg/L, pH value 6~7.
7g is added in above-mentioned 1000mL waste water and is modified compound diatom essence earth adsorbing, the stir process at 30 DEG C of temperature
1.5h, the COD of water sample is 32.71mg/L after processing, COD clearance 86.48%.
Embodiment 5
The diatomite 500g being derived from after the ore dressing of Linjiang City of Jilin Province Bei Feng diatomite Co., Ltd, rotate and manage in laboratory
In formula stove 1.5h is calcined at 450 DEG C；The diatomite 200g after calcining is taken to add clear water 600ml to be stirred in the three-necked flask of laboratory
It is placed in water-bath and heats after uniformly, hexadecyltrimethylammonium chloride 3.0g is added after slurry temperature rises to 75 DEG C, 70
Filtering, washing after the modified 1.5h of~80 DEG C of insulations, the filter cake after washing are dried at 105 DEG C in drying box, obtain being modified diatom
Soil.
Above-mentioned modification infusorial earth 60g, attapulgite 33g are taken, serpentine carries magnesium white residue 7g and mixed in laboratory stirrer
Uniformly, obtain being modified compound diatomite adsorbant.
Take waste component, COD and pH value DESMP (p-benzenesulfonyloxymethyl phosphoric acid diethylester) same as Example 1
Produce waste water 1000mL.
200g is added in above-mentioned 1000mL waste water and is modified compound diatom essence earth adsorbing, is handled at a temperature of 70 DEG C
60min, pH value 6.The COD (COD) of water sample is 32.61g/L after processing, and COD adsorption rates are 74.15%；Formaldehyde
1.42g/L, triethylamine 0.34g/L, diethyl phosphite 0.23g/L, salinity 1.04%, chlorine root 0.39%, adsorption rate are respectively
89.24%th, 93.60%, 91.09%, 89.08%, 92.43%.
Embodiment 6
Modification infusorial earth 68g, attapulgite 5g prepared by Example 5, serpentine carry magnesium white residue 27g in laboratory blender
It is well mixed in device, obtains being modified compound diatomite adsorbant.
Take the north certain oil field waste discharge 1000mL, waste water COD 241.92mg/L, pH value 6~7.
7g is added in above-mentioned 1000mL waste water and is modified compound diatom essence earth adsorbing, the stir process at 30 DEG C of temperature
1.5h, the COD of water sample is 35.19mg/L after processing, COD clearance 85.45%.
Although finally it should be noted that the present invention is described in detail above in conjunction with the embodiments, affiliated skill
The technical staff in art field in claims, may be used also it is understood that on the premise of present inventive concept is not departed from
To carry out alterations and modifications to above-described embodiment.
Claims (2)
1. a kind of compound diatomite adsorbant of modification for handling industrial wastewater, it is characterized in that, the compound diatomite of described modification is inhaled
Attached dose is made up of quaternary ammonium salt-modified diatomite, attapulgite and serpentine de-magging white residue, and its mass percent is：Quaternary ammonium salt changes
Property diatomite：Attapulgite：Serpentine de-magging white residue is 60%~75%：5%~35%：5%~35%；The quaternary ammonium salt
Modified diatomite, it is modified with 0.5%~3.0% that organic quaternary ammonium salt dosage is diatomite quality.
2. the preparation method of the compound diatomite adsorbant of modification according to claim 1, it is characterized in that, its preparation technology step
Suddenly it is：
(1) after diatomite is calcined at 450 DEG C plus calcining diatomite mass concentration is made as 20%~30% in water stirring
Slurry, in diatomite slurry is calcined add organic quaternary ammonium salt be modified, organic quaternary ammonium salt dosage for calcining diatom essence
The 0.5%~3.0% of soil property amount, modified 1~3h at being 50~90 DEG C in temperature, product filtering, is washed and at 100~200 DEG C
At a temperature of dry, be made quaternary ammonium salt-modified diatomite；
(2) modified diatomite for producing step (1) and attapulgite and serpentine de-magging white residue by mass percentage 60%
~75%：5%~35%：5%~35% is uniformly mixed, and produces modified compound diatomite adsorbant.
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| CN105148833B true CN105148833B (en) | 2018-01-02 |
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